Re: [PATCH v7 00/16] Support Armv8 RAS Extensions for Kernel-first error handling

[Umang Chheda]

Hello All/Catalin,

On 7/8/2026 10:52 PM, Catalin Marinas wrote:
> On Tue, Jul 07, 2026 at 07:41:31PM -0700, Borislav Petkov wrote:
>> On Tue, Jun 02, 2026 at 03:15:23PM +0800, Ruidong Tian wrote:
>>>  Documentation/ABI/testing/debugfs-arm64-ras |   87 ++
>>>  MAINTAINERS                                 |   11 +
>>>  arch/arm64/include/asm/ras.h                |   99 ++
>>>  drivers/acpi/arm64/Kconfig                  |   10 +
>>>  drivers/acpi/arm64/Makefile                 |    1 +
>>>  drivers/acpi/arm64/aest.c                   |  423 ++++++++
>>>  drivers/ras/Kconfig                         |    1 +
>>>  drivers/ras/Makefile                        |    1 +
>>>  drivers/ras/arm64/Kconfig                   |   16 +
>>>  drivers/ras/arm64/Makefile                  |    9 +
>>>  drivers/ras/arm64/ras-cmn.c                 |  479 +++++++++
>>>  drivers/ras/arm64/ras-core.c                | 1026 +++++++++++++++++++
>>>  drivers/ras/arm64/ras-inject.c              |  130 +++
>>>  drivers/ras/arm64/ras-storm.c               |  198 ++++
>>>  drivers/ras/arm64/ras-sysfs.c               |  319 ++++++
>>>  drivers/ras/arm64/ras.h                     |  374 +++++++
>>>  drivers/ras/debugfs.c                       |    3 +-
>>>  drivers/ras/ras.c                           |    3 +
>>>  include/linux/acpi_aest.h                   |   36 +
>>>  include/linux/cpuhotplug.h                  |    1 +
>>>  include/linux/ras.h                         |   10 +
>>>  include/ras/ras_event.h                     |   79 ++
>>>  22 files changed, 3315 insertions(+), 1 deletion(-)
>>>  create mode 100644 Documentation/ABI/testing/debugfs-arm64-ras
>>>  create mode 100644 arch/arm64/include/asm/ras.h
>>>  create mode 100644 drivers/acpi/arm64/aest.c
>>>  create mode 100644 drivers/ras/arm64/Kconfig
>>>  create mode 100644 drivers/ras/arm64/Makefile
>>>  create mode 100644 drivers/ras/arm64/ras-cmn.c
>>>  create mode 100644 drivers/ras/arm64/ras-core.c
>>>  create mode 100644 drivers/ras/arm64/ras-inject.c
>>>  create mode 100644 drivers/ras/arm64/ras-storm.c
>>>  create mode 100644 drivers/ras/arm64/ras-sysfs.c
> [...]
>> But that's still not that important - what is even more important is who from
>> ARM is going to review and maintain this? I can take a look at the generic
>> bits so that the RAS stuff coexists fine in drivers/ras/ but I'd need an ARM
>> person to take care of this.
>>
>> There are enough on Cc so let's see if anyone moves.
> 
> I will volunteer James Morse (he doesn't know yet) as the Arm RAS
> expert. He's away this week, hopefully can have a look when he gets
> back. For the ACPI bits, we have Lorenzo, Hanjun, Sudeep who should be
> able to review.
> 
> Adding Rob Herring as well who's been giving some feedback on the DT
> counterpart:
> 
> https://lore.kernel.org/all/20260505-aest-devicetree-support-v1-0-d5d6ffacf0a5@xxxxxxxxxxxxxxxx/
> 
> I have some vague recollection James wanting to start with something
> simpler like EDAC and do DT first but I may be wrong or things could
> have changed since. So, let's wait for James to comment.
> 

JYFI, I have v2 [1] of DT front-end support for ARM RAS.
https://lore.kernel.org/lkml/20260720081954.1858180-1-umang.chheda@xxxxxxxxxxxxxxxx/

Thanks,
Umang